Kryptonite’s Boxed Upper Control Arm Kit is one of the most effective upgrades for the front end of your GM HD truck. Whether you’re running stock suspension, a level kit, or most lift kits, these upper control arms deliver improved strength, durability, and ride quality—all while maintaining proper suspension geometry.
Built from precision laser-cut steel and welded into a rigid boxed design, these arms are engineered for performance and longevity. Included bolt-on ball joints and hardware make installation straightforward, and the arms are fully serviceable.
For added alignment control and long-term durability, Kryptonite recommends upgrading with the optional Cam Bolt Kit #KR0026 , especially if your truck sees off-road use, harsh winters, or has high mileage.
Features
- Boxed Arm Design – Laser-cut and welded for extreme strength and durability
- Bolt-On Upgrade – Compatible with stock or leveled 2500HD–3500HD trucks and many lift kits
- Upgraded Ball Joints Included – Includes Kryptonite bolt-on upper ball joints
- Improved Ride & Alignment – Helps maintain factory geometry while improving strength and performance with added caster
- Greaseable By Design – Apply 4–6 pumps during installation, then maintain with approximately 2-4 pumps every 5,000–7,000 miles. Designed to purge contaminants without overfilling the boot
Fitment
- 2001–2010 Chevy 1500HD, 2500HD, 3500HD
- 2001–2010 GMC 1500HD, 2500HD, 3500HD
- 2002–2009 Hummer H2 ( 8 Lug Trucks Only )
- 2001-2013 Chevy 2500 SUV
- 2001-2013 GMC 2500 SUV
- Important Fitment Info: Kryptonite Upper Control Arms are compatible with stock-height, leveled, and most lifted setups—as long as the upper control arms remain in the factory location. These are not compatible with upper control arm drop lift kits.
What's Included
- 1 x Kryptonite Boxed Upper Control Arm Pair
- 4 x Control Arm Sleeves
- 8 x Control Arm Bushings
- 2 x Upper Bump Stops
- 2 x Kryptonite Bolt-On Upper Ball Joints
- 1 x Hardware Package